WebApps

There are so many free apllications out on the web. They do everything from Microsoft Word documents to diagrams to photos and more. I've begun to list a few but new ones pop up everyday.

Wikis - great collaboration tool.
Lowell's class

Online Word Processing:
Thinkfree
Google Docs

Diagrams
Gliffy

Google for Educators

Photo Sharing:
Flickr
Bubbleshare
Picasa
Slide

Video Sharing/Editing:
YouTube
TeacherTube
JumpCut

Music and Sound:
Audacity

Communication
Skype

Maps and More:
Frappr
Google Earth

Cool Tools: Buzztracker